Welcome to Zomb's Lair!
This is an installation package for the game Biosys which will allow it to be played on modern versions of Windows, with easy to use desktop and/or start menu shortcuts and an uninstall option for quick removal. It uses the emulator PCEm running Windows 95.
Please note: Ctrl+Alt+Page Down changes from fullscreen to a window. When you're ready to quit the game, exit the game normally, then shut down the computer via the start menu. You'll then see a screen that say "It is now safe to turn off your computer." Once you see this, press Ctrl+Alt+Page Down to change to a window, then click on the "System" menu and click "Shutdown". Do not simply close the window otherwise PCEm will continue to run in the background. Do not use the System -> Shutdown function until you've used the start menu shutdown - it's like pulling the power vs turning it off normally.
Zomb's Lair is the passion project of a long-time PC gamer dedicated to bringing old classics to a modern audience, while eliminating all of the hurdles that that normally entails.
More info below: